1、Designation:D400020Standard Classification System forSpecifying Plastic Materials1This standard is issued under the fixed designation D4000;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parenth
2、eses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope*1.1 This standard provides a classification system for tabu-lating the pro
3、perties of unfilled,filled,and reinforced plasticmaterials suitable for processing into parts.NOTE1The classification system serves many of the needs ofindustries using plastic materials.The standard is subject to revision as theneed requires;therefore,the latest revision should always be used.1.2 T
4、he classification system and subsequent line call-out(specification)is intended to be a means of identifying plasticmaterials used in the fabrication of end items or parts.It is notintended for the selection of materials.Material selectionshould be made by those having expertise in the plastics fiel
5、dafter careful consideration of the design and the performancerequired of the part,the environment to which it will beexposed,the fabrication process to be employed,the inherentproperties of the material not covered in this document,and theeconomic factors.1.3 This classification system is based on
6、the premise thatplastic materials can be arranged into broad generic familiesusing basic properties to arrange the materials into groups,classes,and grades.A system is thus established which,together with values describing additional requirements,per-mits as complete a description as desired of the
7、selectedmaterial.1.4 In all cases where the provisions of this classificationsystem would conflict with the referenced ASTM specificationfor a particular material,the latter shall take precedence.NOTE2When using this classification system the two-letter,three-digit suffix system applies.NOTE3When a
8、material is used to fabricate a part where therequirements are too specific for a broad material call-out,it is advisablefor the user to consult the supplier to secure a call-out of the properties tosuit the actual conditions to which the part is to be subjected.1.5 This standard does not purport to
9、 address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was devel
10、oped in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Document
11、s2.1 ASTM Standards:2D149 Test Method for Dielectric Breakdown Voltage andDielectric Strength of Solid Electrical Insulating Materialsat Commercial Power FrequenciesD150 Test Methods for AC Loss Characteristics and Permit-tivity(Dielectric Constant)of Solid Electrical InsulationD256 Test Methods for
12、 Determining the Izod PendulumImpact Resistance of PlasticsD257 Test Methods for DC Resistance or Conductance ofInsulating MaterialsD395 Test Methods for Rubber PropertyCompression SetD412 Test Methods for Vulcanized Rubber and Thermoplas-tic ElastomersTensionD471 Test Method for Rubber PropertyEffe
13、ct of LiquidsD495 Test Method for High-Voltage,Low-Current,Dry ArcResistance of Solid Electrical InsulationD569 Method for Measuring the Flow Properties of Ther-moplastic Molding Materials(Withdrawn 1995)3D570 Test Method for Water Absorption of PlasticsD573 Test Method for RubberDeterioration in an
14、 AirOvenD575 Test Methods for Rubber Properties in CompressionD618 Practice for Conditioning Plastics for TestingD624 Test Method for Tear Strength of Conventional Vul-canized Rubber and Thermoplastic Elastomers1This classification system is under the jurisdiction ofASTM Committee D20 onPlastics and
15、 is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Dec.1,2020.Published December 2020.Originallyapproved in 1982.Last previous edition approved in 2016 as D4000-16.DOI:10.1520/D4000-20.2For referenced ASTM standards,visit the ASTM website,www.astm
16、.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internatio
